Code review comment for lp:~jamesodhunt/libnih/bug-776532

The test suite correctly identifies a bug in this proposed branch. The right fix is for *nih_watch_add* to pass the wrapper *to* nih_dir_walk_scan(); nih_dir_walk_scan() should itself not be wrapping anything or assuming anything about the structure of data, which is what's happening here and causing the test suite failure.

I've got a local fix for this which I'll submit as a separate MP shortly.